Why Save Water

Tasmania's rainfall varies dramatically by region and time of year, making us an island of extremes, wet in the west and dry in the east. 

Regional rainfall

• The West Coast is very wet, receiving over 3000 mm annually, supporting rain forests.
• The Midlands and South (like Hobart) receive much less rain (around 570 mm) due to a rain shadow.
• The East Coast gets moderate, evenly spread rain.
• The North sees peak rainfall in Autumn and Winter

Key Weather factors

• Westerly Winds: Prevailing westerlies bring moisture from the Southern Ocean, which hits the mountains, forcing it up and causing heavy rain on the West Coast (orographic lift).
• Topography: Mountains create a rain shadow, making the east and Midlands much drier.
• Storm Tracks: Seasonal storm systems affect different parts of the island differently. 

Click here to read more of 'Climate Futures for Tasmania' from the Department of Premier and Cabinet Tasmania

• West Coast vs. East Coast: West Coast rainforests thrive on huge rainfall (up to 3000mm+), while the East Coast (like St Helens) is much drier but gets consistent rain.
• Hobart vs. Other Capitals: Hobart (around 570-626mm) is Australia's second-driest capital after Adelaide, contrasting sharply with the island's wettest areas.
• North vs. South/West: The North (e.g., Launceston) has drier summers, with most rain in winter, while the West's wettest period is winter/early spring.
• Overall State vs. Mainland: Tasmania is generally a very wet state, often the wettest in Australia, despite its dry capital, says Bushman Tanks.

Click here to visit the Bureau of Meteorology for annual, seasonal and monthly summaries of Tasmania's temperatures and rainfall.